a computer device for providing shifting effects of shade to a photograph. The unmounted printing, made clear, is illuminated from behind with colored light.
a mix of three optical lanterns for projecting objects on a screen in colors of nature. The photos of three partial photographs taken through shade displays (purple, green, and blue, correspondingly) are superimposed. Each picture is given its major color, and these colors blend and replicate the colors associated with the item.
A device so arranged that three transparent photographs is put within it, each one of these illuminated by a colored light, one by purple, one by green, plus one by blue-violet light. A system of reflectors integrates the three pictures, so your attention views but one photo inside all-natural colors. See chromascope, 2.